Manufacture of fatty acids.



TED @TATS PATNT @FFIQ.

GIACOMO BO'ITARO, OF GENOA, ITALY.

MANUFACTURE OF FATTY ACIDS.

No Drawing.

To all whom it may concern:

Be it known that-I, GIACOMO BOTTARO, a subject of the King of Italy,residing at Genoa, in the Kingdom of Italy, (whose postal address is 7,Salita Dinegro, Genoa, Italy,) chemist, have invented certain new anduseful Improvements in the Manufacture of Fatty Acids, (for which I haveapplied for Letters Patent in the Kingdom of Italy on September 24,1906,) of which the following is a specification.

This invention relates to a process of manufacturing fatty acids, basedupon the employment of lime soaps as raw material and the object thereofis to obtain fatty acids lighter than the neutral ones.

In order to more clearly set forth the utility of the process ofobtaining fatty acids in accordance with this invention, it will be saidthat when recovering glycerin from,

neutral fats, the same is separated either by boiling in closed vesselsor by the fermentative process or by the use of Twitchells reactive intofatty acids and glycerin. Fatty acids of equal quality and color asthose of the neutral fats employed for use in the manufacture of soaphave never been ob tained, but by the process in accordance with thisinvention, on the contrary, fatty acids lighter than the neutral onesare obtained, which increases their value of at least 10%, because it iscommonly known that a light soap has a greater value than a dark one.Therefore, with the process according to this invention, it overcomesthe necessity of artificially whitening the soap by expensive methods,2'. 6., the employment of closed receptacles for boiling, or by coloringthrough Twitchells reactive or by the proteic substances used in thefermentative process. These methods on account of the greatmodifications of the fats produced by the high temperature, 2'. 6., ofabout 200 (1, result very rarely in obtaining the object sought.

According to this invention, lime soap is decomposed into fatty acid andsulfite of lime, by means of a hot current of sulfurous Specification ofLetters Patent.

Application filed Gctober 13, 1906.

Patented Mar. 21, 1911.

Serial No. 338,721.

anhydrid (sulfur dioxid), thereby recovering the glycerin contained inthe lime soap in a concentrated solution. To the current of sulfurousanhydrid may be added a current of steam. If the current of sulfurousanhydrid and water steam should be mixed with air, the by-productobtained would be sulfate of lime instead of sulfite of lime.

Having now fully described my said invention and the manner in which thesame is to be performed I declare that what I claim and desire to secureby Letters Patent is:

1. The herein described improvement in the art of manufacturing fattyacids which consists in subjecting a lime soap as a raw material to theaction of a hot current of sulfurous anhydrid.

2. The herein described improvement in the manufacture of fatty acidswhich consists in passing a heated current of sulfurous anhydrid througha lime soap as a raw material and in such a condition -.to decompose thesame into fatty acid and sulfite of lime and to form a concentratedsolution of glycerin, and separating and recovering the concentratedglycerin thus formed from the fatty acid and sulfite of lime.

3. The herein described improvement in the art of manufacturing fattyacids which consists in passing a heated current of sulfurous anhydridand steam through a lime soap as a raw material.

t. The herein described process for manu facturing fatty acids whichconsists in passing a heated current of sulfurous anhydrid and steam inthe presence of atmospheric air through a lime soap as a raw materialand in such a condition as to decompose the same into fatty acid andsulfate of lime.

In witness whereof I have hereunto set my signature in the presence oftwo wit nesses.

GIACOMO BOTTARO. lVitnesses LUIGI BADIANO, NIOOLA Lovneno.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

